Interdigitated leads-over-chip lead frame for supporting an integrated circuit die

Abstract

An inventive Leads-Over-Chip (LOC) lead frame includes an assembly of interdigitated leads constructed to overlie double-sided adhesive tape on the front-side surface of an integrated circuit (IC) die. An attachment surface of each lead is adhesively attachable to the tape, and at least some of the leads are constructed to extend across the front-side surface of the die from one edge substantially to another edge, such as an adjacent or opposing edge. As a result, a substantial area of the front-side surface of the die is adhesively attachable to the leads through the tape, so the die is supportable in an IC package in an improved manner, and the heat may be conducted away from the die through the lead frame in an improved manner.

What is claimed is: 
     
       1. An assembly for supporting an integrated circuit die, the assembly comprising: a portion of double-sided adhesive tape having one side thereof adhesively secured to a portion of a surface of the integrated circuit die; and   a plurality of support members for overlying a front-side surface of the integrated circuit die, the integrated circuit die having a first edge and a second edge, a first portion of the plurality of support members extending across the front-side surface of the integrated circuit die from the first edge thereof to the second edge thereof terminating thereadjacent and a second portion of the plurality of support members extending across the front-side surface of the integrated circuit die from the second edge thereof to the first edge thereof terminating thereadjacent, a portion of each support member of the plurality of support members adhesively secured to the portion of double-sided adhesive tape to support the integrated circuit die.   
     
     
       2. The assembly of claim 1, wherein the front-side surface of the integrated circuit die includes a plurality of bond pads thereon, wherein the support members comprise Leads-Over-Frame (LOC) interdigitated lead frame leads connected to the bond pads. 
     
     
       3. The assembly of claim 1, wherein the first portion of the plurality of support members extending across the front-side surface of the integrated circuit die from the first edge thereof to the second edge thereof extend across at least 60% of a distance between the first edge and the second edge. 
     
     
       4. The assembly of claim 1, wherein at least some of the plurality of support members extend across the front-side surface of the integrated circuit die from the first edge thereof to another, adjacent second edge thereof. 
     
     
       5. The assembly of claim 1, wherein at least some of the plurality of support members extend across the front-side surface of the integrated circuit die from the first edge thereof to the second edge thereof so that at least 80% of an area of the front-side surface is adhesively attached to the support members. 
     
     
       6. An assembly for supporting an integrated circuit die, the assembly comprising: a portion of insulating adhesive secured to a portion of the integratrated circuit die; and   a plurality of support members for overlying a front-side surface of the integrated circuit die, the integrated circuit die having a first edge and a second edge with an attachment surface of at least one support member of the plurality of support members adhesively attached to the front-side surface of the integrated circuit die and a first portion of the plurality of support members extending across the front-side surface from the first edge thereof to the second edge thereof and a second portion of the plurality of support members extending across the front-side surface of the integrated circuit die from the second edge thereof to the first edge thereof so an area thereof is adhesively attached to the plurality of support members to support the integrated circuit die.   
     
     
       7. The assembly of claim 6, wherein the front-side surface of the integrated circuit die includes a plurality of bond pads thereon, wherein the plurality of support members comprises Leads-Over-Frame (LOC) interdigitated lead frame leads that are coupleable to the bond pads. 
     
     
       8. The assembly of claim 6, wherein at least some of the plurality of support members are for extending across the front-side surface of the integrated circuit die from the first edge thereof to another, opposing second edge thereof. 
     
     
       9. The assembly of claim 6, wherein at least some of the plurality of support members are for extending across the front-side surface of the integrated circuit die from the first edge thereof to another, adjacent second edge thereof. 
     
     
       10. An assembly for supporting an integrated circuit die having a first edge and second edge, the assembly comprising: an adhesive secured to a portion of the integrated circuit die; and   a plurality of support members for overlying a front-side surface of the integrated circuit die with an attachment surface of at least one support member of the plurality of support members adhesively attached to the front-side surface of the integrated circuit die and at least a portion of a first portion of a plurality of support members extending across the front-side surface from a first edge thereof to a second edge thereof and a portion of a second portion of the support members extending across the front-side surface from a second edge thereof to a first edge thereof so a portion of the front-side surface of the integrated circuit die is adhesively attached to at least a portion of one of the plurality of support members to support the integrated circuit die.   
     
     
       11. The assembly of claim 10, wherein the front-side surface of the integrated circuit die includes a plurality of bond pads thereon, wherein the plurality of support members comprises Leads-Over-Frame (LOC) interdigitated lead frame leads that are coupleable to the bond pads. 
     
     
       12. The assembly of claim 10, wherein the at least a portion of the first portion of the plurality of support members extending across the front-side surface of the integrated circuit die from a first edge thereof to a second edge thereof are for extending across at least 60% of a distance between a first edge and a second edge. 
     
     
       13. The assembly of claim 10, wherein at least some of the plurality of support members are for extending across the front-side surface of the integrated circuit die from a first edge thereof to a second, opposing edge thereof. 
     
     
       14. The assembly of claim 10, wherein at least some of the plurality of support members are for extending across the front-side surface of the integrated circuit die from a first edge thereof to a second, adjacent edge thereof.